This work evaluated the effect of the natural organic acids on the uptake of Ca by the wheat roots in a hydroponic solution. The following organic acids were evaluated: citric, oxalic, tartaric, malic, malonic, maleic, DL-malic, p-hydroxybenzoic, aconitic, and salicilic. The organic acids neither enhanced the root growth nor increased Ca uptake. The salicilic and malic acids were highly toxic and decreased the root growth. The citric, tartaric, maleic, aconitic, and salicilic decreased the Ca uptake by the roots due to their higher capacity to form the stable complexes with Ca in solution at pH 6.0. Decreasing the Ca valence from Ca++ to CaL+ or CaL2(0) through the organic ligand complexation reactions decreased the Ca uptake. The results suggested that the wheat roots do not absorb Ca-organic complexes.
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机译:叶绿素/壳聚糖/小球藻/铁/钙/ DHA / EPA /含绿豆/黑豆/红豆/白豆室温暴露,绿豆芽/绿色寄主豆芽/大白菜/新鲜/羽衣甘蓝/马铃薯/大蒜/姜/生姜/黄瓜/南瓜/菠菜/人参/红鸭/迷你番茄/西瓜/瓜,嫩芽/马铃薯/甘薯/黄瓜/西瓜/瓜/大白菜/大蒜/生姜/普通大米,阿克巴里,大米/大米/大麦/荞麦/橡子塑料空气分配孔,把手,阳光遮蔽的盖子,水分配孔处理幼苗,处理水耕栽培容器,不良,岩石形成,固体培养基,水耕,稻田,田地,耕种